#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main() {
	int x, y = 0;
	scanf("%d", &x);
	if (x > 0) {
		y = -1;
	}
	else if (x == 0) {
		y = 0;
	}
	else y = 1;
	printf("%d", y);
	return 0;
}